Net inspector groups should be case insensitive

pcbnew/widgets/pcb_net_inspector_panel.cpp

@@ -1303,8 +1303,9 @@ void PCB_NET_INSPECTOR_PANEL::onAddGroup()
     if( std::find_if( m_custom_group_rules.begin(), m_custom_group_rules.end(),
                       [&]( std::unique_ptr<EDA_COMBINED_MATCHER>& rule )
                       {
-                          return rule->GetPattern().Upper() == newGroupName.Upper();
-                      } ) == m_custom_group_rules.end() )
+                          return rule->GetPattern() == newGroupName;
+                      } )
+        == m_custom_group_rules.end() )
     {
         m_custom_group_rules.push_back( std::make_unique<EDA_COMBINED_MATCHER>( newGroupName,
                                                                                 CTX_NET ) );

pcbnew/widgets/pcb_net_inspector_panel_data_model.h

@@ -500,11 +500,11 @@ public:
         // First see if item matches a group-by rule
         if( m_parent.m_custom_group_rules.size() > 0 )
         {
-            wxString searchName = aItem->GetNetName().Upper();
+            wxString searchName = aItem->GetNetName();
 
             for( const std::unique_ptr<EDA_COMBINED_MATCHER>& rule : m_parent.m_custom_group_rules )
             {
-                if( rule->Find( searchName.Upper() ) )
+                if( rule->Find( searchName ) )
                 {
                     aItem->SetParent( m_custom_group_map[ rule->GetPattern() ] );
                     groupMatched = true;